Generating a Succession of Strings


('aa'..'ag').each { |x| puts x }
# aa
# ab
# ac
# ad
# ae
# af
# ag

1.	enter a string as the argument to []=, and it will return the new, corrected string, if found; nil otherwise.
2.	enter a range to indicate a range of characters you want to change. Include the last character with two dots (..)
3.	Get substring from a string object
4.	Getting the Parts of a String You Want
5.	String range with string.length
6.	Change a string with range

Generating a Succession of Strings : String Range « String « Ruby